Merged revisions 3848-3890,3892-3896,3898-3908 via svnmerge from

Merged revisions 3848-3890,3892-3896,3898-3908 via svnmerge from
http://scons.tigris.org/svn/scons/checkpoint

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  r3892 | stevenknight | 2009-01-12 06:02:05 -0800 (Mon, 12 Jan 2009) | 2 lines

  Updates for 1.2.0.d20090112 checkpoint release.
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  r3893 | stevenknight | 2009-01-12 06:07:35 -0800 (Mon, 12 Jan 2009) | 2 lines

  Fix undefined reference in User's Guide build.
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  r3898 | stevenknight | 2009-01-13 02:44:25 -0800 (Tue, 13 Jan 2009) | 2 lines

  Update checkpoint timestamps.
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  r3899 | stevenknight | 2009-01-13 06:45:07 -0800 (Tue, 13 Jan 2009) | 2 lines

  Update expected Copyright year line used in tests.
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git-svn-id: http://scons.tigris.org/svn/scons/trunk@3909 fdb21ef1-2011-0410-befe-b5e4ea1792b1